<template>
    <div>
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item :to="{ path: '/goods' }">商品列表</el-breadcrumb-item>
            <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>

        <el-card>
            <el-alert
                title="添加商品信息"
                type="info"
                center
                show-icon
                :closable="false"
                >
            </el-alert>

            <el-steps 
                :space="200" 
                :active="activeIndex - 0" 
                finish-status="success"
                align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>

            <el-form 
                :model="addForm" 
                :rules="addFormRoles" 
                ref="addFormRef"
                label-position="top"
                >
                <el-tabs 
                    :tab-position="'left'" 
                    v-model="activeIndex"
                    :before-leave="beforeTabLeave"
                    @tab-click="tabClicked"
                    >
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                                v-model="addForm.goods_cat"
                                :options="parentCateList"
                                :props="cascaderProps"
                                size="small"
                                :clearable="true"
                                @change="parentCateChanged"
                            ></el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                            <el-checkbox-group v-model="item.attr_vals" size="small">
                                <el-checkbox :label="cb" border v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                            <el-checkbox-group v-model="item.attr_vals" size="small">
                                <el-checkbox :label="cb" border v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload
                        :action="uploadUrl"
                        :headers="headerObj"
                        :on-preview="handlePreview"
                        :on-remove="handleRemove"
                        :before-remove="beforeRemove"
                        :on-success="handleSuccess"
                        list-type="picture">
                        <el-button size="small" type="primary">点击上传</el-button>
                        <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor
                            ref="myQuillEditor"
                            v-model="addForm.goods_introduce"/>
                        <el-button type="primary" @click="Add">添加商品</el-button>
                    </el-tab-pane>
                </el-tabs>
            </el-form>
            <el-dialog
                title="图片预览"
                :visible.sync="previewVisible"
                width="50%"
                @close="previewVisible = false"
            >
                <img :src="previewPath" alt="" class="previewImage"/>
            </el-dialog>
        </el-card>
    </div>
</template>

<script>

import _ from 'lodash'

export default {
    data(){
        return{
            activeIndex: '0',
            addForm:{
                goods_name: '',
                goods_price: 0,
                goods_weight: 0,
                goods_number: 0,
                goods_cat: [],
                pics: [],
                goods_introduce: '',
                attrs: []
            },
            addFormRoles:{
                goods_name:[
                    { required: true, message: '请输入商品名称', trigger: 'blur' }
                ],
                goods_price:[
                    { required: true, message: '请输入商品价格', trigger: 'blur' }
                ],
                goods_weight:[
                    { required: true, message: '请输入商品重量', trigger: 'blur' }
                ],
                goods_number:[
                    { required: true, message: '请输入商品数量', trigger: 'blur' }
                ],
                goods_cat:[
                    { required: true, message: '请选择商品分类', trigger: 'blur' }
                ]
            },
            parentCateList: [],
            cascaderProps: {
                value: 'cat_id',
                label: 'cat_name',
                children: 'children',
                expandTrigger: 'hover',
            },
            manyTableData: [],
            onlyTableData: [],
            uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
            headerObj:{
                Authorization: window.sessionStorage.getItem('token')
            },
            previewVisible: false,
            previewPath: '',
            editorOption: {
                
            },
            id : ''
        }
    },
    created(){
        this.getParentCateList()

        this.id = this.$route.query.id

        if(this.id !== 'add'){
            this.getGoodInfo()
        }
    },
    methods:{
        async getParentCateList() {
            const { data: res } = await this.$http.get('categories', {
                params: { type: 3 }
            })

            if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

            this.parentCateList = res.data
        },
        async getGoodInfo(id) {
            const { data: res } = await this.$http.get(`categories/${this.id}`)

            if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

            console.log(res.data)
        },
        parentCateChanged() {
            if (this.addForm.goods_cat.length < 3) {
                this.addForm.goods_cat = []
                this.manyTableData= []
                this.onlyTableData= []
                return
            }
        },
        beforeTabLeave(activeName,oldActiveName){
            if ((activeName === '1' || activeName === '2') && 
                this.addForm.goods_cat.length < 3) {

                this.$message.error('请选择商品分类!')
                return false
            }
        },
        async tabClicked(){
            if(this.activeIndex === '1'){
                const { data: res } = await this.$http.get(
                `categories/${this.cateId}/attributes`,
                { params: { sel: 'many' } }
                )

                if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

                res.data.forEach((item) => {
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [] 
                })

                this.manyTableData=res.data

            }else if(this.activeIndex === '2'){
                const { data: res } = await this.$http.get(
                `categories/${this.cateId}/attributes`,
                { params: { sel: 'only' } }
                )

                if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

                res.data.forEach((item) => {
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [] 
                })

                this.onlyTableData=res.data
            }
        },
        handlePreview(file){
            this.previewPath = file.response.data.url

            this.previewVisible = true
        },
        beforeRemove(){
            return this.$confirm('确认移除该照片吗?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning',
            })
                .then(async () => {
                    
                })
                .catch(() => {
                    reject(false);
                })
        },
        handleRemove(file){
            const filePath = file.response.data.tmp_path

            const index = this.addForm.pics.findIndex(x=> x.pic === filePath)

            this.addForm.pics.splice(index,1)
        },
        handleSuccess(response){
            if (response.meta.status !== 200) return this.$message.error(res.meta.msg)

            const picInfo={
                pic: response.data.tmp_path
            }

            this.addForm.pics.push(picInfo)
        },
        Add(){
            this.$refs.addFormRef.validate(async (valid) => {
                if (!valid) return this.$message.error('请填写所有标*的！')

                const form = _.cloneDeep(this.addForm)
                form.goods_cat = form.goods_cat.join(',')

                this.manyTableData.forEach(item=>{
                    form.attrs.push({
                        attr_id : item.attr_id,
                        attr_value : item.attr_vals.join(' ')
                    })
                })

                this.onlyTableData.forEach(item=>{
                    form.attrs.push({
                        attr_id : item.attr_id,
                        attr_value : item.attr_vals.join(' ')
                    })
                })

                const { data: res } = await this.$http.post(
                'goods', form)

                if (res.meta.status !== 201) return this.$message.error('添加失败!')
                
                this.$router.push('/goods')

                this.$message.success('添加成功!')
            })
        },
        onEditorBlur(quill) {
            console.log('editor blur!', quill)
        },
        onEditorFocus(quill) {
            console.log('editor focus!', quill)
        },
        onEditorReady(quill) {
            console.log('editor ready!', quill)
        },
        onEditorChange({ quill, html, text }) {
            console.log('editor change!', quill, html, text)
            this.content = html
        }
    },
    computed:{
        cateId() {
            if (this.addForm.goods_cat.length === 3) {
                return this.addForm.goods_cat[this.addForm.goods_cat.length - 1]
            }

            return null
        }
    }
}
</script>

<style lang="less" scoped>
    .previewImage{
        width: 100%;
    }

    .el-button{
        margin-top: 15px;
    }
</style>